KR101801029B1 - Water quality management system using Internet of Things - Google Patents

Abstract

The present invention proposes a concrete solution for grasping the characteristics of water used for fisheries such as smart farm, hydroponic cultivation, farming, aquaculture, and fishing, and simultaneously provides 2-way power / signal transmission method for long- The present invention relates to a water quality management apparatus using Internet, which can be controlled in real time through the Internet based on objects so as to simplify the structure and maintain the quality of water quality. More specifically, A converter connected to each of the sensors of the sensor group for supplying power to the sensor group and detecting a measurement signal to convert the analog output signal into a standard signal, A controller capable of communicating with the object Internet, In receiving a signal composed of the local panel to display the measured value of the sensor; The measurement signal is transmitted from the power supply line of the converter, and the electromotive force of the sensor is converted into the international standardized signal, so that a separate conversion process is unnecessary, resulting in a quick response and a simple structure.

Description

{Water quality management system using Internet of Things}

The present invention relates to a water quality management apparatus, and more particularly, to a water quality management apparatus capable of real-time management and control of water quality through agriculture and fishery using water, And a water quality management device using the Internet.

Recently, smart palm, hydroponic cultivation, aquaculture site, and a large number of sites have been applied to a variety of applications using the Internet, which can remotely control the operation of facilities installed on the site by using a management device or a portable terminal using a wired / wireless communication network.

At present, Korea focuses on the convergence of basic agriculture and science and technology in order to overcome the crisis of agriculture sustainability such as decrease of farm household population, labor shortage, and reduction of agricultural land, and to meet the demand such as creation of new growth power and improvement of quality of life have. In addition to the sixth industrialization of agriculture, the government will promote the conversion of traditional agriculture to smart agriculture, which is a convergence of various technologies such as ICT, BT and CT, to expand the scope of agriculture and create new added value and jobs. It is a reality that we are looking for.

However, farming, livestock and fisheries aquaculture facilities are mostly located in the outskirts of the residential area, and a plurality of facilities are concentrated in one place. Therefore, the manager and the communication line are integrated into one, There is a need for improvement measures that can be integrated with sensors and communication interfaces.

In industries related to agriculture, livestock, and fishery industries, much investment is required in cultivating or cultivating organisms as well as facilities such as houses and aquaculture farms, and it takes considerable effort and efforts to grow the organisms.

In addition, it is a difficult condition to maintain the necessary care for a long period of time. Therefore, when the person is away from his / her residence area, Which can be fatal to living creatures and cause unexpected large economic losses.

In order to solve the above problems, in recent years, there has been a tendency to operate a smart farm or a smart farm in the field of fisheries such as a farm or a farm, or in the field of livestock raising livestock.

Water, which is used for the growth of plants and for the growth of fish species and livestock, must be measured in real time in order to satisfy appropriate growth and growth conditions.

The Korean Patent Registration No. 10-0405005 related to the prior art using the Internet of things will be described as follows.

The conventional automatic form system includes a control unit for controlling the system as a whole, an aquaculture type aquaculture tank for culturing the fish, a drum filter connected to the aquaculture tank and the circulation pipe, a biofilm filtration unit, a sterilizing unit, And a temperature control unit, and a plurality of complex sensors for transmitting the water quality of the circulating water circulating through the circulation pipe to the control unit, including a plurality of pumps and a replenishing water supply unit controlled by the complex sensor unit control unit.

The complex sensor unit measures the water quality of the seawater circulated through the circulation pipe and transmits the water quality data to the control unit. The control unit compares the water quality data of the complex sensor unit with the preset reference value (optimal water quality condition of the fish style) Off control signals for controlling the circulation of the seawater collected on the basis of the open / close control signals and the drive or stop control signals of the seawater purifier.

At this time, the seawater purification unit is installed in the circulation pipe to purify the seawater discharged from the aquaculture tank. The pump is installed in the circulation pipe and is adaptively opened and closed to circulate the seawater circulated through the circulation pipe to the aquarium in response to the pump opening / closing control signal provided by the control unit.

The complex sensor attached to one side of the aquaculture system is composed of circulating water temperature, dissolved oxygen (DO), pH, NH ₄ ⁺ , NO ₂ ^- , NO ₃ ^- , water level, turbidity, OUR oxygen uptake rate, and transmits the measured water quality data to the control unit.

Thereafter, the control unit compares the water quality data transmitted from the complex sensor with a predetermined reference value (optimum water quality that the fish can be cultured), and when the water quality data transmitted as a result of comparison is less than the reference value, And generates a control signal for driving the pump installed in the circulation pipe between the pump and the pump. When the water quality data transmitted as a result of the comparison exceeds the reference value, a control signal for closing the pump is generated and transmitted to the manager, .

However, in the above-described conventional automatic form system, a composite sensor is used to measure the properties of water. In this case, the composite sensor notifies only when the measured value is out of the set value, There was a problem.

In addition, the above-described conventional automated form system has a problem in that it does not take into account measurement conditions or measurement methods depending on the characteristics of water and the characteristics of water, thereby causing an error.

Accordingly, the present invention can select measurement conditions and measurement methods suitable for the characteristics of water quality, and convert the signal into an international unified standard signal, display it through a transmission operation without a separate meter, automatically recognize the life of the sensor, An improved water quality management device that can be managed and controlled through the Internet function is desperately required.

1. Registration No. 10-0405005 2. Registration No. 10-1146055 3. Registration No. 10-0967840 4. Publication No. 10-2009-0027279 5. Registration No. 10-1507057

SUMMARY OF THE INVENTION Accordingly, the present invention has been made in view of the above problems of the prior art, and it is an object of the present invention to provide a water quality management apparatus using the Internet to manage the characteristics of water used in spat palm, hydroponics, aquaculture, It has its purpose.

Another object of the present invention is to enable simultaneous measurement of various characteristics of water and remote management through object communication.

It is another object of the present invention to provide a sensor group separately in several kinds of partition cells having different growth conditions and culture conditions to check the characteristics of water suitable for each species.

It is a further object of the present invention to provide a power supply / signal line of a converter and a power supply to a sensor and a measurement signal to a controller for simple transmission without requiring a separate meter to be displayed on a local panel.

Another object of the present invention is to make it possible to easily detect an abnormality of a sensor or an abnormality of supplied water from a remote place through a notification lamp.

In addition, another object of the present invention is to prevent signal loss and noise from being affected by 2Wire (24V DC) method even if the transmission length is long.

In order to achieve the above object, the present invention provides a method for measuring the characteristics and environmental characteristics of water introduced into a plurality of compartment cells divided into unit areas in hydroponic cultivation, smart farm, Wherein the sensor group is provided with a square cell having a slope of 20 to 25 DEG with respect to a horizontal bottom surface of a place where the sensor cell is installed when the water to be measured is supplied by bypass in the cell, The supply of the measurement water to the cell is formed so as to flow into the low position point and to be drained to the high position point so that the sensor of the sensor group is orthogonal to the inclination angle of the measurement cell And is connected to each of a plurality of sensors included in the sensor group, and a power source / signal line is connected to the sensor group to supply power, (24V DC) type converter for converting an electromotive force signal generated during measurement into an international standardized signal. When the converter is connected to a sensor for measuring the underwater or atmospheric temperature, the display temperature is set in degrees Celsius ) Or a Fahrenheit (° F). When the converter is connected to a sensor for measuring the dissolved oxygen amount of the water quality, a measurement selection switch that can select a galvanic method or a polarographic method according to the measurement principle A controller for receiving a measurement signal converted through a power supply / signal line of the converter and receiving a wireless transmission and a control signal to a manager or a portable terminal using a wireless communication network, and receiving a measurement signal from the controller And a local panel for displaying sensor measurement values of each sensor group. And provides a water quality management device using the Internet.

As described above, the present invention can manage the characteristics of water used in spat palm, hydroponic cultivation, aquaculture farm, and fishing ground in real time, simultaneously measure various characteristics of water, and enable remote management through object communication .

In addition, a sensor group is separately provided in each of several kinds of partition cells having different growth conditions and aquaculture conditions, and the quality of the water is kept constant by checking the characteristics of water suitable for ecological conditions.

In addition, an abnormality of a sensor or an abnormality of water to be supplied can be easily confirmed from a remote place through a notification lamp, thereby improving the visibility of the user.

In addition, it has the effect of selecting stable measurement condition and output condition by connecting converter suitable for sensor of different measurement method and characteristics.

In addition, power is supplied to the sensor through the power / signal line of the converter and the measurement signal is simply transmitted to the controller through the power / signal line of the converter, and displayed on the local panel, thereby simplifying the structure of the apparatus.

In addition, by using the 2Wire (24V DC) signal transmission method, even if the transmission length is long, the loss of the signal is small and the influence of the noise is not affected, so that the accurate measurement value can be displayed at the display point.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view showing a water quality management apparatus using the Internet of objects according to the present invention;
FIG. 2 is an application perspective view illustrating a water quality management apparatus using the Internet of objects according to the present invention. FIG.
3 is an enlarged view of a portion A in Fig. 2,
FIG. 4 is an exemplary front view of a sensor in a measurement cell according to the present invention. FIG.
5 is a diagram showing the connection of a sensor group, a converter, and a controller according to the present invention.
Figs. 6 to 8 are a configuration diagram of a converter for a hydrogen ion sensor, a converter for an electric conductivity (EC) sensor,
9 is a configuration diagram showing a converter for a temperature sensor, a dissolved oxygen sensor, a residual chlorine sensor,
10 is a functional circuit diagram of a 2Wire according to the present invention,
11 to 13 are a perspective view, a front view and a configuration view of the controller,
FIG. 14 is a diagram showing a configuration in which a converter according to another embodiment is supplied with power from a controller,
15 is a perspective view of a local panel according to the present invention,
Figs. 16-18 illustrate an example in which a sensor group is installed in various forms or hydroponic cultivation,
19 is a diagram illustrating an example in which measured values measured in a sensor group of a sensor group according to the present invention are displayed on a local panel.

BRIEF DESCRIPTION OF THE DRAWINGS The above and other features and advantages of the present invention will be more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which: FIG.

As shown in FIGS. 1 to 4, the water quality management device using the Internet of the present invention accurately measures the characteristics of water used in hydroponic cultivation, smart farm, various farm sites, A plurality of sensor groups 20 composed of a plurality of sensors 21 and a sensor 21 of the sensor group 20 are connected to each other to measure the characteristics of water to detect a measurement signal, A controller 40 that receives a measurement signal converted into an international uniform standard signal from the converter 30 and communicates with an external device through the Internet 40, And a local panel 50 that receives a signal and displays a measured value of the sensor 21.

The water quality management apparatus 100 may include a plurality of partition cells 10 which are divided into arbitrary unit areas such as hydroponic cultivation, smart farm, various farming sites, And a plurality of sensor groups 20 for measuring the atmospheric temperature in the sensor group 20 are formed.

Here, the partition cells 10 are formed in a plurality of, for example, in the case of hydroponic cultivation, the supply line for supplying water may be different, and in the case of SmartParm, each compartment or unit area may be represented, It is formed in a unit water tank or the like.

At this time, the sensor group 20 is formed with the corresponding number of sensor groups 20 corresponding to the partition cells 10, and the sensor 21 of the sensor group 20 includes a hydrogen ion concentration sensor, an electric conductivity sensor, An oxygen sensor, a residual chlorine sensor, an underwater temperature sensor, and an atmospheric temperature sensor.

For the sake of detailed explanation, in the present invention, the hydrogen ion concentration sensor 21b, the electric conductivity sensor 21c, the dissolved oxygen sensor, the residual chlorine sensor, the underwater temperature sensor 21d and the atmospheric temperature sensor 21e are exemplified as; The sensor group 20 used in hydroponics or smart farm is preferably composed of a hydrogen ion concentration sensor 21b, an electric conductivity sensor 21c, an underwater temperature sensor 21d and an atmospheric temperature sensor 21e; It is preferable that the sensor group 20 used in the farm or the farm is composed of the hydrogen ion concentration sensor 21b, the dissolved oxygen sensor, the residual chlorine sensor, the underwater temperature sensor 21d and the atmospheric temperature sensor 21e.

At this time, the hydrogen ion concentration sensor 21b, the electric conductivity sensor 21c, the dissolved oxygen sensor, and the residual chlorine sensor are provided with a separate temperature sensor for measuring the temperature of the water to be measured, Value to be compensated in real time.

The hydrogen ion concentration sensor 21b, the electric conductivity sensor 21c, the dissolved oxygen sensor, the residual chlorine sensor, and the underwater temperature sensor 21d among the sensors 21 forming the sensor group 20 are immersed in water And the atmospheric temperature sensor 21e is arranged in the indoor space of the measurement area of the partition cell 10 in which the sensor group 20 is installed.

Here, the underwater temperature sensor 21d and the atmospheric temperature sensor 21e may be composed of one of a thermocouple, a RTD, and a thermistor. The thermocouple, RTD, and thermistor will be briefly described as follows.

1. When the two types of metals are combined, the thermocouple flows between the two metals when the temperatures at both ends of the junction are different from each other. In this case, the temperature difference between the two contacts is determined by the current. The platinum-platinum rhodium, chromel- , Iron-vigorous tantalum, copper-constantan, and the like.

2. The RTD is obtained by measuring the resistance by measuring the electrical resistance of the metal or semiconductor according to the temperature, and measuring the temperature. The resistance element may be composed of a metal wire such as platinum, copper, or nickel.

3. The thermistor is a semiconductor device that has a property that the electric resistance value decreases sensitively when the temperature rises. It is formed by sintering metal oxides such as manganese, nickel, cobalt, iron, copper and titanium. And the measurement range may be configured to have a sensitivity of about -50 to 300 ° C.

The underwater temperature sensor and the atmospheric temperature sensor are each formed of one of a 2-wire type, a 3-wire type and a 4-wire type. The 2-wire type is composed of T and T and the 3-wire type is composed of 2 T1 and 1 T2 , Four-wire type Two T1 and two T2 type, and the more the wire type, the more accurate the temperature measurement is.

On one side of the partition cell 10, a notification lamp 23 connected to the converter 30 and displayed when the measured upper limit value and the lower limit value of the sensor 21 are out of the set range is formed.

The first lamp 23a to the nth lamp 23n are connected to the respective sensors 21 of the unit sensor group 20 in detail. When the sensor 21 is not connected to the sensor 21 or the converter 30 and a measurement signal is not generated by the sensor 21 or when the measured upper limit value or the lower limit measurement value is exceeded, .

At this time, the first lamp 23a indicates whether the hydrogen ion concentration sensor 21b is abnormal, the second lamp 23b indicates whether the electric conductivity sensor 21c is abnormal, the third lamp 23c, And the n-th lamp 23n is formed as an example to indicate whether or not the air temperature sensor 21e is abnormal.

As shown in FIG. 5, the sensor group 20 is connected to the water supply pipe 300 at 20 ° C with respect to the horizontal bottom surface of the place where the water to be measured is supplied from the water supply pipe 300, A rectangular measuring cell 22 is installed, which is obliquely installed at an angle of ~ 25 °.

A drain port 22b is formed to drain water to a high point which is an upper position and an inlet 22a is formed so that water is supplied to a lower point of a lower position of the measurement cell 22, Thereby forming a plurality of installation holes 22c to be installed.

The sensor 21 is installed in the measurement cell 22 so as to be perpendicular to the inclination angle of the measurement cell 22 at regular intervals.

In detail, the measurement cell 22 may be constructed of a non-transparent synthetic resin material or a metal material so as not to receive the sensor 21 of the sensor group 20, 22 is installed on the cell panel 24 at an angle of about 20 to 25 ° with respect to the end on the side of the inlet port 22a by raising the end on the side of the drain port 22b, A sensor 21 such as a dissolved oxygen sensor or a residual chlorine sensor which is not shown in the drawing is installed to the cell panel 24 so that the cell panel 24 is placed at the bottom of the measurement site It may be fixedly installed.

At this time, it is preferable that the measurement cell 22 is connected to the water supply pipe 300 of the partition cell 10 by a separate pipe and is installed at a lower position or the same position as the water supply pipe 300, When the water is introduced into the inlet 22a, the inner space of the measuring chamber 22 is buffered from the lower part of the inner space, and then the water is re-supplied to the water supply pipe 300 through the drain 22b.

 Here, the measured water flowing into the measurement cell 22 does not affect the measurement of the sensor 21 because sudden flow velocity fluctuations or pressure changes do not occur, and water is not supplied to the water supply pipe 300 Water is buffered inside the measuring cell 22 to prevent the sensor 21 from drying, thereby protecting the measuring unit.

A power supply / signal line 31 is connected to each of the plurality of sensors 21 provided in the sensor group 20 and supplies power to the sensor 21 and an electromotive force signal And a plurality of converters 30 of a 2Wire (24V DC) system for converting the signal into an international unified standard signal.

In the present invention, the converter 30 is categorized as being connected to the hydrogen ion concentration sensor 21b, the electric conductivity (EC) sensor 21c, the underwater temperature sensor 21d and the atmospheric temperature sensor 21d, respectively.

6, the converter 30 connected to the hydrogen ion concentration sensor 21b of the sensor 21 of the sensor group 20 is connected to the sensor 21 of the sensor group 20, The sensor terminal block 32 is formed.

An analog circuit part 33 for recognizing and receiving the electromotive force value of the sensor 21 connected to the sensor terminal block 32 as an analog signal is formed.

And a signal converting unit 34 for converting an analog signal of the sensor 21 received from the analog circuit unit 33 into an output signal.

A gain terminal portion 35 composed of a minimum value terminal 35a and a maximum value terminal 35b for adjusting the minimum value and the maximum value of the electromotive force of the sensor 21 so as to standardize and set the minimum value and the maximum value for measurement, do.

A zero adjustment terminal 36a for outputting a value of 4 mA with respect to the minimum value of the electromotive force of the standard and setting sensor 21 through the gain terminal section 35 and a zero adjustment terminal 36a for outputting a value of 20 mA to the maximum electromotive force And an output value adjusting section 36 composed of a span adjusting terminal 36b.

A power supply / signal terminal 37 for connecting the measurement signal output of the sensor 21 and the positive electrode line 31a and the negative electrode line 31b of the power supply / signal line 31 supplied with power is formed.

And is connected to the controller 40 so that the measurement signal of the sensor 21 is outputted through the negative polarity line 31b of the power source / signal line 31. [

7, the converter 30 connected to the electrical conductivity (EC) sensor 21c of the sensor 21 of the sensor group 20 is connected to the sensor 21 terminal A sensor terminal block 32 is formed.

An analog circuit part 33 for recognizing and receiving the electromotive force value of the sensor 21 connected to the sensor terminal block 32 as an analog signal is formed.

And a signal converting unit 34 for converting an analog signal of the sensor 21 received from the analog circuit unit 33 into an output signal.

A zero adjustment terminal 36a for outputting a value of 4 mA to the minimum value of the electromotive force of the sensor 21 and a span adjustment terminal 36b for adjusting the output value to output a value of 20 mA to the maximum electromotive force 36 are formed.

A power supply / signal terminal 37 for connecting the measurement signal output of the sensor 21 and the positive electrode line 31a and the negative electrode line 31b of the power supply / signal line 31 supplied with power is formed.

And is connected to the controller 40 so that the measurement signal of the sensor 21 is outputted through the negative polarity line 31b of the power source / signal line 31. [

In the case of the converter 30 connected to the sensor 21 for measuring the electrical conductivity of the water quality, four or eight sensor terminal blocks 32 may be formed. In the present invention, the number of the terminal blocks is eight Two-electrode, three-electrode, and four-electrode type sensors 21 are connected.

In other words, the sensor terminal block 32 has four anode terminals (A: anode) and cathode terminal (K: cathode), for example, two electrodes, three electrodes and four electrodes, And to be connected to one of the 2- to 4-wire systems.

3. A temperature sensor for measuring the underwater or atmospheric temperature of the sensor 21 of the sensor group 20 or a converter 30 connected to the sensor 21 for measuring the dissolved oxygen concentration or the residual chlorine concentration, The sensor terminal block 32 is formed.

An analog circuit part 33 for recognizing and receiving the electromotive force value of the sensor 21 connected to the sensor terminal block 32 as an analog signal is formed.

And a signal converting unit 34 for converting an analog signal of the sensor 21 received from the analog circuit unit 33 into an output signal.

A power supply / signal terminal 37 for connecting the measurement signal output of the sensor 21 and the positive electrode line 31a and the negative electrode line 31b of the power supply / signal line 31 supplied with power is formed.

And is connected to the controller 40 so that the measurement signal of the sensor 21 is outputted through the negative polarity line 31b of the power source / signal line 31. [

When the converter 30 is connected to the sensor 21 for measuring the underwater temperature or the atmospheric temperature, it is possible to configure a temperature selection switch 39 for converting the display temperature to output in degrees Celsius (° C) or degrees Fahrenheit have.

9, when the converter 30 is connected to the sensor 21 for measuring the dissolved oxygen amount of the water quality, a measurement selection switch 39a capable of selecting a galvanic method or a polarographic method according to the measurement principle .

10, a common feature of the converter 30 includes an LCD 30 or an FND-type display window 30a for displaying measurement values, and a plurality of notifications, such as an abnormality, and an upper limit value / a lower limit value, And an output selection switch 38 for selecting the voltage or current of the measurement signal of the sensor 21 is formed.

When the output selection switch 38 is set to a voltage, the output is switched to 0 to 5V or 1 to 5V. When the output selection switch 38 is set to a current, the output is switched to 4 to 20mA.

The converter 30 is connected to a power source / signal line 31 to transmit a measurement signal to the controller 40. The power source / signal line 31 is used to receive external power separately from the controller 40 A 2Wire method which is connected to the power supply / signal terminal 37 and functions to supply the power of the converter 30 and the sensor 21 of the sensor group 20 and the measurement signal to the controller 40, .

That is, the positive polarity line 31a of the power source / signal line 31 is connected to the positive terminal 37a of the power / signal terminal 37, the positive polarity line 31b is connected to the negative terminal 37b, (GND: 37c) d is connected to the ground line.

At this time, the negative pole 31b of the power source / signal line 31 is cut off and one negative pole 31b is connected to the negative pole of the signal receiving terminal 41 of the controller 40 and another negative pole 31b are connected to the plus (+) pole of the signal receiving terminal 41.

Here, the signal receiving terminal 41 of the controller 40 is configured to receive the measurement signal (Signal) transmitted through the - polarized line 31b and to connect the polarized line 31b regardless of the power source.

The communication signal form transmitted to the controller 40 along with the signal of 4 to 20 mA, 0 to 5 V, or 1 to 5 V at the power supply / signal terminal 37 is RS-232C, RS-423, RS-422, For example, RS485.

That is, the power / signal terminal 37 receives power separately through the power / signal line 31 and transmits the measurement signal of the sensor 21 to the controller 40.

11 to 13, the measurement signal received through the power / signal line 31 of the converter 30 is received and transmitted to the manager or the portable terminal 200 through the wireless communication network, Thereby forming a controller 40 that receives a signal.

The controller 40 forms a power supply unit 47 for supplying power.

A positive terminal 31b of the power source / signal terminal 37 connected to the converter 30 for power supply is connected to the signal receiving terminal 30 through which a measurement signal is received at 4 to 20 mA, 0 to 5 V, or 1 to 5 V, (41).

A signal distributing unit 43 connected to the storage unit 42 for storing a measurement signal transmitted to the signal receiving terminal 41 and for distributing the signal to the local panel 50 is formed.

One side of the signal distributor 43 is connected to a manager or a portable terminal and constitutes an object communicator 44 for controlling the local panel 50 through a control signal received from the manager or the portable terminal.

The controller 40 configures the rejection unit 45 with data indicating a measured value, a temperature, a power amount, a current amount, a date, and a time stored in the storage unit 42.

That is, by displaying the measurement value, the underwater and the atmospheric temperature, the amount of electric power to be used, the current amount, the date and the time using the data rejection 45, it is possible to separately judge the overall operating condition or abnormality of the water quality management apparatus 100 .

In addition, the controller 40 has an input / output unit 46 formed on one side thereof, and the information stored in the storage unit 42 can be downloaded or updated by a recording system, an SD card, and a USB system.

In this case, the controller 40 may have a shape similar to the shape of an electric box or a wiring box. The input / output unit 46 is formed with a cover 46a of an open / close type in order to prevent contamination. ) Should be transparent so that they can be easily recognized by the user.

As shown in FIG. 14, the local panel 50 receives signals from the controller 40 and displays the measured values of the sensors 21 of the sensor groups 20. 10 in a stand-up manner or in the form of a screen installed in the air of one side area.

The local panel 50 forms a plurality of panel windows 51 in front of the panel 52 in the same manner as the number of the sensor groups 20. The panel window 51 communicates with the signal And signal values of the sensors 21 of the sensor group 20 transmitted from the distribution unit 43 are displayed in a list form.

The panel window 51 of the local panel 50 may be individually connected to the controller 40 or a circuit corresponding to the sensor group 20 may be formed on the panel 52 to contact the panel window 51 And the panel window 50 is configured to display measurement items, measurement units, and the like.

In another embodiment, the water quality management apparatus 100 connects the power source / signal terminal 37 of the converter 30 and the power source unit 47 of the controller 40 with the power source / signal line 31 so that the converter 40 And supplies power to the sensor 21 from the controller 40.

The controller 40 receives the measurement signal from the signal receiving unit 41a at 4 to 20 mA, 0 to 5 V, or 1 to 5 V from the negative pole 31b of the power / signal terminal 37, And distributed to the local panel 50 through the signal distribution unit 43. [0157] FIG.

The operation and effect of the present invention constructed as described above will be described below.

As shown in FIGS. 1 to 18, the water quality management apparatus 100 is installed in a compartment cell 10 such as a hydroponic cultivation, a smart farm, a variety of farms, and a full moon.

Then, the sensor 21 of the sensor group 20 performs gain adjustment using a solution or a standard current / voltage generator and standardizes the output value to 4 to 20 mA in order to unify the minimum / maximum range of electromotive force that is set differently for each manufacturing An output value adjustment is required.

In order to adjust the gain of the sensor 21 of the sensor group 20 and adjust the output value of the sensor group 20, terminals of various kinds of sensors 21 are connected to the sensor terminal unit 10 of the converter 30, To the signal terminal (37).

When the adjustment of the minimum value is completed by using the minimum value terminal 35a of the gain terminal portion 35 during the gain adjustment, the output value adjustment to the minimum value is performed using the minimum value terminal 35a of the output value adjusting portion 36, The maximum value of the gain adjustment is adjusted using the maximum value terminal 35b of the gain terminal unit 35 after the output value adjustment for the output value adjustment unit 36 and then the output value adjustment for the maximum value is performed using the maximum value terminal 35b of the output value adjustment unit 36 And standardizes the different electromotive forces of the sensor 21 to prepare it.

In this case, when the water supply pipe 300 is used to supply the water in the partition cells 10, the bypass pipe 301 is separately connected to the water supply pipe 300 and then the bypass pipe 301 Each sensor 21 corresponding to a measurement item is installed in the measurement cell 22 connected to the sensor cell group 20 and the sensor group 20 is installed in each of the cell blocks 10.

Here, the sensor group 20 is designated from # 1 to #n in an arbitrary order in order to easily describe the display of the local panel 50. In the present invention, the sensor group 20 is arbitrarily designated by # 1 to # 18 I will explain.

The combination of the sensor group 20 as described above uses, for example, a hydrogen ion concentration sensor 21b, an electric conductivity (EC) sensor 21c, an underwater temperature sensor 21d, and an atmospheric temperature sensor 21e.

Here, the sensor 21 may be installed directly in the bypass piping 301 in a circulation type or an insertion type without using the measurement cell 22. [

When the partition cells 10 are formed in the form of a water tank or aquaculture tank, they may be installed in a separate frame provided in a measurement environment or in various types of piping facilities using a sensor holder 21a in an immersion type.

The sensor 21 of the sensor group 20 is connected to the sensor terminal block 32 of the converter 30 suitable for the sensor 21 for measuring the quality of water quality.

When the installation of the converter 30 is completed, the alarm lamp 23 is installed at a certain height so that the manager can identify the alarm lamp 23 at one side of the partition cell 10 provided with the sensor group 20 And the signal converter 34 of the converter 30 connected to each sensor 21 is connected to receive the signal.

When the installation of the converter 30 and the notification lamp 23 is completed for each sensor 21 of the sensor group 20, it is easy to manage and is installed in a region of one side of the measurement site where there is little influence on movement and moisture and pollution The controller 40 and the local panel 50 are installed in a stand type or a lift type.

At this time, the controller 40 connected to the power / signal terminal 37 of the converter 30 is connected to the local panel 50, and the object communication unit 44 of the controller 40 is connected to the management terminal of the manager or the portable terminal 200) to complete the installation of the water quality management apparatus (100).

As an example, the sensor 21 may be installed in the installation hole 22c of the measurement cell 22 after the installation of the water quality management apparatus 100 is completed. .

First, when water is supplied through the water supply pipe 300, the water flows into the inlet 22a through the bypass pipe 301 to fill the internal space of the measurement cell 22, It is re-introduced into the pipe 300 and circulated.

At this time, when the measurement cell 22 is used, the water is gradually changed from the lower part to the upper part through the inflow port 22a located at the lower part, There are stabilized and measurable characteristics.

In addition, even if no water is supplied to the water supply pipe 300, water is always filled in the measurement cell 22 and the hydrogen ion concentration sensor 21b, the dissolved oxygen sensor, The residual chlorine sensor or the like is dried, so that the physical property is not changed, and the sensor 21 can be stably maintained in an optimum state.

Next, the converter 30 uses the power supply / signal line 31, the controller 40 uses the power supply 47, and separately applies power to the local panel 50, And the power is supplied through the sensor terminal block 32 of the converter 30.

Thereafter, the sensor 21 measures the hydrogen ion concentration, the electric conductivity (EC), the dissolved oxygen amount, the measured water temperature, and the atmospheric temperature of the water to be measured, and at the same time, 32 to the analog circuit unit 33 of each converter 30 and then the signal converted by the signal converting unit 34 is converted into a current of 4 to 20 mA, 0 to 5 V, 1 to 5 V, And converts the measurement signal of the voltage type.

The measurement signal converted by the signal conversion unit 34 is received by the signal reception terminal 41 of the controller 40 via the power supply / signal terminal 37 via the power supply / signal line 31, And is transmitted to each panel window 51 of the local panel 50 by the signal distributor 43.

That is, the converter 30 receives power from the power source / signal line 31 connected to the power / signal terminal 37 and outputs a measured value signal of each sensor 21 of the sensor group 20 The measurement signal is extracted from the signal receiving terminal 41 of the controller 40 connected to the negative polarity line 31b of the power source / signal line 31 by using the RS485 communication method and stored in the storage unit 42, To the rocker panel (50).

In this way, the power supply / signal line 31 receives the power and simultaneously transmits the measurement signal to the controller 40, so that the signal output terminal, the power supply terminal, and the signal output terminal can be used together So that the circuit structure and operation structure of the converter 30 can be simplified.

In addition, by using the power / signal line 31 of the 2Wire method, even if the installation distance of the converter 30 and the controller 40 is long, there is no loss of the signal and there is no influence on the external interference, There is a characteristic that can be.

When the measured values measured using the sensor 21 applied to the sensor group 20 are different from each other, the converter 30 converts the signals into the international standardized signals and outputs them to the controller 40 ), There is no need for a separate analyzer and a converter for signal conversion, and the measurement display time and transmission time are fast and the conversion error is reduced.

At this time, the panel window 51 sequentially displays the hydrogen ion concentration measurement value, the electric conductivity measurement value, the underwater temperature, and the atmospheric temperature sequentially from the top.

The notification lamp 23 receives the measurement signal from the signal conversion unit 34 of the converter 30 and emits light when an abnormality occurs in which the measured value of each corresponding sensor 21 is out of the set maximum and minimum values, It is possible to easily identify whether the sensor group 20 is abnormal or not.

As a result, the converter 30 adjusts the gain of the sensor 21 through the gain terminal unit 35 and adjusts the output value through the output value adjusting unit 36. In addition, The analog circuit unit 33 and the signal converting unit 34 are connected to the local panel 50 or the controller or the portable terminal 200) to be displayed or notified.

In addition, the measurement value or operation information of the sensor 21 of the sensor group 20 transmitted to the controller 40 is delivered to the portable terminal 200 such as a manager or a smart phone or a PDA, An administrator can transmit and control a control signal through an application installed in a smart phone.

19, the measured values of the sensor 21 displayed on the local panel 50 are displayed on the portable terminal 200, and the measured values of the respective panel windows 51 are displayed on the respective You can download it.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, Various changes and modifications may be made by those skilled in the art.

10: compartment cell 20: sensor group
21: sensor 21a: sensor holder
22: measuring cell 22a: inlet
22b: drain hole 22c: installation hole
23: notification lamps 23a to 23n: first to nth lamps
24: Cell panel 30: Converter
30a: Display section 30b: Notification lamp
31: Power supply / signal line 32: Sensor terminal block
33: analog circuit section 34: signal conversion section
35: Gain terminal part 35a: Minimum value terminal
35b: maximum value terminal 36: output value adjusting section
36a: Zero adjustment terminal 36b: Span adjustment terminal
37: Power supply / signal terminal 37a: + terminal
37b: - Terminal 37c: GND terminal
38: Output selection switch 39: Temperature selection switch
39a: Measurement selection switch 40: Controller
41: Signal receiving terminal 41a: Signal receiving terminal
42: storage part 43: signal distribution part
44: object communication unit 45: deny with data
46: input / output portion 46a: cover
47: power supply unit 50: local panel
51: Panel Window 52: Panel
100: Water quality management device 200: Manager or portable terminal
300: water supply pipe 301: bypass pipe

Claims (18)

A plurality of sensor groups 20 are formed for measuring the characteristics and environmental characteristics of water flowing into a plurality of compartment cells 10 divided into unit areas in hydroponic cultivation, However,
The sensor group 20 is installed with a rectangular measurement cell 22 inclined by 20 to 25 ° with respect to a horizontal bottom surface of a place where the sensor group 20 is installed when the water to be measured is supplied by bypass in the partition cell 10 (21) of the sensor group (20) based on a low point in the measurement cell (22). The sensor cell (20) Is formed to be perpendicular to the inclined angle of the measurement cell (22) at regular intervals upward,
The power supply / signal line 31 is connected to the sensor 21 to supply power to the sensor 21 and the electromotive force signal generated in the measurement is transmitted to the sensor 21 through the international unification A plurality of converters 30 of a 2Wire (24V DC) system for converting into a standard signal,
When the converter 30 is connected to the sensor 21 for measuring the underwater temperature or the atmospheric temperature, a temperature selection switch 39 for converting the display temperature to be output in degrees Celsius (° C) or Fahrenheit (F) A measurement selection switch 39a is provided which can select a galvanic method or a polarographic method according to the measurement principle when the probe 30 is connected to the sensor 21 for measuring the dissolved oxygen amount of the water quality,
The controller 40 receives the measurement signal converted through the power supply / signal line 31 of the converter 30 and receives the wireless transmission and control signals to the manager or the portable terminal 200 using the wireless communication network ,
And a local panel (50) receiving the measurement signal from the controller (40) and displaying the measured values of the sensor (21) of each sensor group (20). delete delete delete delete delete delete delete delete delete delete delete delete delete delete delete delete delete

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